CN207835294U - A high torque brushless motor - Google Patents

Abstract

The utility model discloses a large-torque brushless motor, which comprises a housing, the center of casing is provided with a bearing hole, the bearing is arranged in the bearing hole, the center of bearing runs through a rotating shaft, the outer wall of bearing hole is provided with a stator coil, the peripheral side of stator coil is provided with a rotor, the longitudinal section of rotor is arranged in a shape like Chinese character 'shan', the lower end of rotating shaft is fixedly connected with the center of rotor, the inner side wall of rotor is provided with a permanent magnet, the lower wall of casing is provided with an air outlet, the upper part of casing is provided with a fan shell, the fan shell is provided with an air inlet, and the fan shell is internally provided with a cooling fan; the large-torque brushless motor is good in heat dissipation effect and small in temperature difference inside the shell.

Description

A high torque brushless motor

technical field

The utility model relates to a high-torque brushless motor.

Background technique

The brushless DC motor consists of a motor body and a driver, and is a typical mechatronic product. Since the brushless DC motor operates in a self-controlled manner, it does not add an additional starting winding to the rotor like a synchronous motor with heavy load under variable frequency speed regulation, nor does it cause oscillation and out of step when the load changes suddenly.

The heat dissipation effect of the existing brushless motor is poor, and the brushless motor cannot overcome the influence of temperature changes, resulting in high power loss and waste of resources.

Utility model content

In view of this, the purpose of the utility model is to provide a high-torque brushless motor with good heat dissipation effect and small temperature difference in the casing.

In order to solve the problems of the technologies described above, the technical solution of the utility model is:

A high-torque brushless motor, comprising an organic casing, a bearing hole is arranged in the center of the casing, a bearing is arranged in the bearing hole, a rotating shaft runs through the center of the bearing, and the outer wall of the bearing hole A stator coil is arranged on the upper side of the stator coil, and a rotor is arranged on the outer peripheral side of the stator coil. The longitudinal section of the rotor is arranged in the shape of a "mountain". The wall is provided with a permanent magnet, the lower wall of the casing is provided with an air outlet, the upper part of the casing is provided with a fan casing, the fan casing is provided with an air inlet hole, and the fan casing is provided with cooling fan.

Preferably, a filter screen is provided on the inner wall of the casing provided with the air outlet; a filter screen is also provided on the upper part of the fan case.

Preferably, the rotating shaft is in interference fit with the bearing.

Preferably, the cooling fan is clamped and fixed on the rotating shaft.

Preferably, a case cover is fixed on the upper part of the casing, and the fan case is detachably connected to the case cover.

The technical effect of the utility model is mainly reflected in the following aspects: since a fan case is arranged on the upper part of the casing, an air inlet hole is arranged on the fan case, and a heat dissipation fan is arranged inside the fan case, and the heat dissipation fan blows air directly to the stator coil, which can effectively bring Take away the heat generated by the stator coil; since the lower part of the casing is equipped with an air outlet, the air outlet and the air inlet form a circulating air passage, so that the air volume flowing through the stator coil is large, the heat dissipation effect is improved, and the temperature difference inside the casing is reduced ;Because there are filter screens in the air inlet and outlet holes to prevent dust from entering the inside of the casing and affecting the operation of the motor; because the fan casing is detachably connected to the casing cover, it is convenient to maintain and clean the fan; because the fan is stuck It is fixed on the rotating shaft, and the rotation of the rotating shaft drives the fan to rotate without additional power supply, which simplifies the structure.

Description of drawings

Fig. 1 is a sectional view of the high-torque brushless motor of the present invention.

Detailed ways

Below in conjunction with accompanying drawing 1, the specific embodiment of the utility model is further described in detail, so that the technical solution of the utility model is easier to understand and grasp.

In this embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right side", "left end", "above", "back", "middle", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , and therefore cannot be construed as a limitation of the present invention.

In addition, in this specific embodiment, if the connection or fixing method between the components is not specified in particular, the connection or fixing method can be fixed by bolts or pins commonly used in the prior art, or connected by pin shafts, etc. Therefore, it will not be described in detail in this embodiment.

With reference to Fig. 1, a kind of high-torque brushless motor comprises organic casing 1, and the center of described casing 1 is provided with bearing hole 11, and bearing 4 is arranged in the described bearing hole 11, and the center of described bearing 4 A rotating shaft 3 runs through, and the rotating shaft 3 is in interference fit with the bearing 4 .

The outer wall of the bearing hole 11 is provided with a stator coil 5, the outer peripheral side of the stator coil 5 is provided with a rotor 7, the longitudinal section of the rotor 7 is arranged in the shape of a "mountain", the lower end of the rotating shaft 3 is connected to the The center of the rotor 7 is fixedly connected, the inner side wall of the rotor 7 is provided with a permanent magnet 6, the heavy coil is used as a stator, and the light permanent magnet 6 is used as a rotation, so that the rotor consumes less power and the output torque is relatively low. bigger.

The lower wall of the casing 1 is provided with an air outlet 13, the inner wall of the casing 1 provided with the air outlet 13 is provided with a filter screen, and the upper part of the casing 1 is provided with a fan casing 8, so The fan case 8 is in communication with the case 1, the upper part of the case 1 is fixed with a case cover 2, the fan case 8 is detachably connected to the case cover 2, and the fan case 8 is provided with The air inlet hole 81, the fan case 8 is provided with a heat dissipation fan 9, the heat dissipation fan 9 is clamped and fixed on the rotating shaft 3, and the upper part of the fan case 8 is also provided with a filter screen to prevent dust from entering the casing 1, effectively protecting the components inside the casing 1, so that its service life is longer.

The technical effect of the utility model is mainly reflected in the following aspects: since a fan case is arranged on the upper part of the casing, an air inlet hole is arranged on the fan case, and a heat dissipation fan is arranged inside the fan case, and the heat dissipation fan blows air directly to the stator coil, which can effectively bring Take away the heat generated by the stator coil; since the lower part of the casing is equipped with an air outlet, the air outlet and the air inlet form a circulating air passage, so that the air volume flowing through the stator coil is large, the heat dissipation effect is improved, and the temperature difference inside the casing is reduced ;Because there are filter screens in the air inlet and outlet holes to prevent dust from entering the inside of the casing and affecting the operation of the motor; because the fan casing is detachably connected to the casing cover, it is convenient to maintain and clean the fan; because the fan is stuck It is fixed on the rotating shaft, and the rotation of the rotating shaft drives the fan to rotate without additional power supply, which simplifies the structure.

Of course, the above are only typical examples of the utility model. In addition, the utility model can also have other various specific implementation modes. within the range.

Claims (5)

1. A high-torque brushless motor, comprising an organic casing, the center of the casing is provided with a bearing hole, the bearing hole is provided with a bearing, the center of the bearing runs through a rotating shaft, and the bearing hole A stator coil is provided on the outer wall of the stator coil, and a rotor is provided on the outer peripheral side of the stator coil. The longitudinal section of the rotor is arranged in the shape of a "mountain". A permanent magnet is arranged on the inner side wall of the casing, and it is characterized in that: an air outlet hole is arranged on the lower wall of the casing, a fan casing is arranged on the upper part of the casing, and an air inlet hole is arranged on the fan casing, so A cooling fan is arranged in the fan case. 2. The high-torque brushless motor according to claim 1, characterized in that: a filter screen is provided on the inner wall of the casing provided with the air outlet; a filter screen is also provided on the upper part of the fan case. 3. The high-torque brushless motor according to claim 1, characterized in that: the rotating shaft is in interference fit with the bearing. 4. The high-torque brushless motor according to claim 1, wherein the heat dissipation fan is clamped and fixed on the rotating shaft. 5. The high-torque brushless motor according to claim 1, characterized in that: a case cover is fixed on the upper part of the casing, and the fan case is detachably connected to the case cover.